Picture-projecting apparatus.



R. H. WAL LER. g "PICTURE PROJECTINGAPPARATUS. 7

APPLICATION FILED MAR. 17, I915. 1 ,189,758. Patented July 4, 1916.

2 sngns-snsn 1.

R. H. WALLER. PICTURE PROJECTING APPARATUS. APPLICATION FILED MAR l-l. l9l5.

Patented July 4, 1916.

2 SHEETS-SHEET 2.

. LER a at Nashville, Davidson county, and 'state of Tennessee, have invented and discovered.

1 ROBERT HENRY WA LEB, or NAsH-vILLnTENNEssEE.

' PICTURE-1238.03 ECTING APPARATUS.

v u- -l v I Specification of Letters Patent.

Application filed March 17, 1915. Serial No. 14,890.

To all whom it may concern:

Be it known that L'Rosnnr HENRY WAD citizen of the United States, residing certain new and useful Improvements in Picture-Projecting Apparatus, of whichthe v following is a specification.

projecting images from slides sustained by.

The invention has for its object the automatic control and actuation of a slide car-.. rier relativeto 'a projector, andt-he control of the projector cooperatively with the actuation of the slide carrier for successively the carrierwithout projecting any portions thereof during movement of the carrier.

With these and further objects in View,

as will'in part'hereinafter become apparent and in part be stated, the invention comprises certain novel construction, combinationandarrangement of parts, as will be subsequently specified and thereafter pointed out in'the claims.

In the accompanying drawing, Figure 1 is a view in side. elevation of an apparatus embodying the features of the invention,

Fig. 2 an edge view thereof. Fig. 3 a fragmentary perspective view, on an enlarged scale, of one of the slide holders and contiguous parts, Fig. i a fragmentary en-i larged sectional perspective, the section be-s .ing taken on the line 44 ofFig. 1, and .Fig. 5 a transverse axial section through one of the commutators. Referring to the drawing by numerals, 1

indicates the base, from which upstand' side" v frames 2, 2, the upper ends of which are rigidly connected by a shaft 3." A carrier wheel 4c is ournaled on shaft 3 adjacent to each 'bracket2, and since the two carrier,

wheels and their'cooperative parts are duplicates of each other, one will be described in detail and the description and reference numerals will apply equally to the other. Each w eel a is provided with axially extendingbrackets 5, 5, fixed to the periphery of the wheel, each: bracket being formed at each side with a longitudinal groove so'thatthe facing edges of any two brackets 5 provide a retainer ifor a slide 6 at the inner end, that is, the end engaging wheel 4.. Each bracket 5 is formed with a radiallyextend ing plate or tab 7 adapted to be engaged by an actuator hereinafter described." Brackets 8, 8 are fixed to'the baseand upsta'nd therefrom, and-each is formedwith a hori- Patented July 4, 1912i, 5

zontally disposed sleeve at upper end.

shaft 8 is journaled in the sleeves of bracket 8', the shaft 8 carrying at each end an operatmg disk 9. Each disk 9 is provided with a wrist-pin 10retained in place by a lock-f screw 11, the pin projecting atone side of the disk and being engaged by a carrier actuating pawl 12, and extending at the other side of the disk to serve as a cammin'g pin 10 for a locking lever 13. The lever 13 is pivoted in the bracket 14 fi'xed to the base 1, and is pressed by spring 15- in the direction for-causing theinner end of the lever to move toward the z'carrier. wheel 7 10 Said inner end of lever 13 is formed with a notch 16: adapted to receive successively;

the tabs or radially extendingflplates 7 and to thereby lock the wheel against rotary .1

movement during such engagement. The

and actuated by the pin 10, the action belng. in a direction for swinging levers-r13 up0n its pivot and thereby causing the inner elid" of the lever to be withdrawn engagement with the respective tab 7? Pawl 12 ispressed by a spring 18 toward the'wh eel 4,

and, at the upper free end of the pawl-12, a hook 19 is formed adapted to successively engage the tabs 7 to rotate thewheel 4: with a step-bystep movement as the hook-19 is successively brought into cooperative en-. gagement with x respect to the several tabs 7- .incident to the reeiprocations imparted to thepawl 1 2 du'e--to rotation of the (disk 9,

the throw of the wrist-pin '10 being slightly greater than the distance from one tab 7 to the next so as to enable: the hook: 19 to engage the successive tabs. I

'A stereopticon, or lIkG PIOJQCtOI', is pro? vided for. each wheel4, and each consists of any appropriate tubular lens carrying element 20 fixed to the shaft 3 within the respective' wheel, and coiipieratin'gywith a tubular section 21 outside oi. the wheel and axially in line with the respective section 20, each section 21 being sustained by a bracket 22., fixed to and upstanding" from base 1 in advance of the outer end of the An electric section. 20 of the projector. light 23 is provided for each projector and is supplied with current (from a source not shown) through a circuit including a comirnutator 24 and conductor brushes 25 and 26, there being one commutator- 24 for each light 23. The conductor section of-thecom- I I 75,: outer end of the lever 13 is providedwith a cam portion 17 positioned for being engaged.;

with current. Thus,

, brushes mntator 24 of one light circuit is out of line with the conductor section of theother commutator and in line with the insulator section thereof, the two commutators being mounted on shaft 8 no as to rotate exactly together and to thereby supply current to the light 23 of one projector at one time and to hght 23 of the other pro ector at another time, the alternate light being extinguished during the operation of the other.

A motor :27 of any appropriate form, preferably electrical, is provided and has its shaft 28 formed with a worm 29 .nieshing with a worm gear 30 fitted to shaft 8, where by the parts are adapted to he driven.

, The wriet-pin 10 of one diet: 9 is relatively at the diametrically opposite point from the corresponding wrist-pin of the other disk El, so that when one pawl 12 is ac tuated to impart a etep of rotation to one wheel i, the other pawl 12 will be moving upward to the tab engaging position and during such upward movement the respective wheel d will remain stationary, and it is during this period oi. stationary 'condt tion that the image is P'LOjUGiGl'lfl'filll the slide. i

As best econ in F 5, each commutator disk 2% is insulated for one-hall ot its periphery as indicated at i'Z-i, and the remain der ol' ite periphery is formed of a conductorvplato 2 F, and the two llliS'fi 24; are positioned on shaft 8 with the insulating portionsl 2d relatively at diametrically opposite sidee of the shaft and with the condoctor ln'ackete similarlylocated. so that when either pawl 12 has completed its downward stroke and has thus positioned its respective wheel lwith a new slide disposed in the line ofthe projector, the conductor plate 2 L" begins to engage the contact and 26 of the circuit of the light of thatparticular projector cooperating with the respective wheel. 4: "which has just been poeitirmed, and the brushes and 26 contmue to have their circuit closed by plate 24 during one-half ofthe rotation of shaft 4-, that is, While the pawl 12, corres flonding to the respective commutator disk 24; in question, is moving again up to the elevated tah engaging po ition and the carrier wheel is consequently, stationary. In the meantime, the other pawl. l2 will have engaged a tab 7 and caused its respective wheel lto he moved while the other wheel remains stationary. The commutator disk 2&- of the light 23 in the projector for the I'DOVIIIQ wheel twill have presented its insulating; surface 24 to its brushes 25 and 26 and. thus will have broken the circuit of the particular light 52?. and such circult Wlll remain l'nroken while the respective wheel 4. 1S heme moved and while the other wheel remains ctationar "with its light supplied it will be seen that 111 jected the continued operation of the. machine, one slide of one wheel has its image proat one time and that image continues to he projected while the other wheel remains in darkness and is being petitioned :tor presenting a new slide to its projector. As soon as the new slide has been presented, the formerly etationary wheel begins-a to move, the light of its projector is extinguished and current is supplied to the light of the projector oi? the newly positioned wheel. By this alternate action, an idiagc is constantly projected and itis, of course, clear that the time during, which. any particular image will he PI'OjQCtBLi may he goo ernod by the speed oi the motor 537.

Having thus fully described my invention, what I claim as, new and denirc to euro lay Letters Patent, is:

1. The combination with a rotary Hiltlt} carrier, means for projecting images from elidee euetained lay the carrier, means for rotating the carrier wilh a etcjrhy'eiop movement ol. :1 length proportional to the dimensions at the carried slid e. an electric 1' 'lit for the projcctinc nneans, a circuit for the light :l or eupplyinp; current tllercto, and a ooninlutator geared to more in timed relat/ion. to the movement of the carrier and controlling: the light circuit for cutting: oil? current to the ligl'ht during movmucnt of the iizarrieru sahetantially an set forth.

52. The combination, with rotary slide carriers, means for rotating said carriers altcrnately. with stcp-hy-etep movements, a projector for each carrier, and electric light for .ach projector, a circuit for each electric light, and a commutator controlling each circuit and connected with the carrier rotating means for dislrihuting current alter natclvto the lighte of the projectors inci from the slides sustained by the brackets,

and means operable to engage the pro ecting portions of the brackets; and, import a step lav-step movement to the wheel, substantween, an actuator adapted to successively engage said tabs for rotating the carrier,

-from t ojector disposed to project images e slides sustained by the brackets, substantially asset forth. I 5. The combination, with a rotatably mounted carrier, of a pawl for actuating the and a pr ,carrier, a disk for actuating the pawl,'- pivas i ' a disk for actuating the pawl, a wrist-pin substantially as set forth.

otally engaged by the pawl, means/for rotating tha disk, alocki'ng pawl adapted to engage the carrier and lock the same against rotation, and a projection carried by the disk and disposed to engage and actuate the locking pawl for moving said locking pawl out of locking engagement with thecarrier as the actuating pawl is-arriving at a. position for beginning movement of the carrier,

6. The combination, with a rotary slide carrier, of a pawl for actuating the carrier,

a rotary disk for actuating the pawl pivotthe actuation of the pawl, substantially as i set forth.

7. The-c0mbinat1on, with a rotary slide carrier, of a pawl for actuating the carrier,

I lvitnesses 1 connecting with the and pivotally engaging t hc ;pawl, the wristpm having a projectln portion, and a locking lever having a 10c ingend disposed to engage and lock the carrler against movement, the o'pposite end from the locking end being'positioned in the path of movement of the projecting portion of the wrist-pin for being engaged and actuated thereby for resubstantially as set forth. a

8. The combination, with a rotary-carrier and a-project0r therefor having an electric light,'of an actuating shaft, a commutator carried by the shaft in the circuit of the light and timed to break the circuit during movement of the carrier and to close the circuit while the carrier is stationary, an

actuatingpawl for moving the carrier, a

, disk carried-by the shaft and pivotally con nected to thepa'wl for actuating the pawl, a

locking lever disposed to engage and lock the carrier against movement, and a projectioncartiedby the disk in position for .con-

tacting -tvith the locking lever and releasing the engagement of the locking lever with l the carrier, substantially as set forth.

In witness whereof, I havehereunto set ,my hand and seal at Nashville, Tennessee,

this 15th dayof March, A. D. nineteen hundred and fifteen.-

rorrar' mixer WALLER. r. 5.

PERKINS BAXTER, O. P. Axnnasox.

leasing the locking engagement of the lever, 

